爱你深不见底x
[ài nĭ shēn bù jiàn dĭ x]
"爱你深不见底x" means 'My love for you goes so deep I can’t see the bottom x'. It implies the person who holds this nickname is in a very deep love with someone else. The word deep here suggests that this person's emotions toward their object of love are boundless, profound, and difficult to fully perceive. In addition, adding x at the end symbolizes that the degree of the emotion is indeterminate and endless, which further reinforces this point about deep, unfathomable love.